Canon Pixma MG5220 - printhead destroyed after 2 weeks??

Hi there,

Just bought a Canon Pixma MG5220 a couple weeks ago- then ran out of black ink days ago. I then made a silly mistake and refilled the black ink cartridge with Epson ink... now the print head seems to be done. Yesterday bought a new proper manufacturer's cart and installed it... no black ink prints out. also there are no error messages.

I've run the print head cleaner numerous times to no avail- and now I'm totally lost, and haven't been able to find any other people who have made this same bad error! Help will be much appreciated- and thanks in advance! :o